An Introduction to Molecular Biology/Quiz time

Quiz No.1

Point added for a correct answer:
Points for an incorrect answer:
Ignore the questions' coefficients:

1 How does puromycin inhibit protein synthesis?

	it binds to A site and stop the elongation.
	it affect the peptidyl trasferase activity.
	it degrades the t-rna.
	it is responsible for loading termination codon

2 The shape of a DNA molecule is

	Double helix.
	triple helix.
	no helix.
	linear

3 Cytochrome C releases to cytoplasm during

	Apoptosis.
	Mitosis.
	Meiosis.
	Cytosis

4 What is the main reason for cyanide poisoning?

	Inhibition of electron transport chain
	Inhibition of Fatty acid transport chain.
	Inhibition of Nucleic acid transport chain
	Inhibition of Fatty acid metabolism

5 DNA replication takes place during

	G1
	G2
	M
	S phase

6 The term "Molecular biology" was first used by

	Warren Weaver in 1938
	Warren Buffet
	Watson and Crick
	Gregor Mendel

7 RNAPII can exist in two forms

	Protein and vitamin
	RNAPII0, with a highly phosphorylated CTD, and RNAPIIA, with a nonphosphorylated CTD.
	RNAP 1 and RNAP 2
	Protein and rna

8 Single letter code for Alanine is

	A
	B
	C
	D

9 Single letter code for Phenylalanine is

	P
	B
	C
	F

10 Single letter code for Tryptophan is

	T
	B
	C
	W

11 In DNA Adenine coupled with

	T
	G
	C
	W

12 DNA is a long polymer made from repeating units of

	Nucleotides
	Nucleosides
	Nucleorides
	Nucleophyte

13 Topoisomerases are enzymes with

	both nuclease and ligase activity.
	both polymerase and cutting activity
	both transcription and ligase activity
	both unwinding and polymerase activity

14 Who could not win the Nobel Prize in Physiology or Medicine for discovery of DNA structure

	Franklin
	Watson
	Crick
	Wilkins

15 Who is not associated with discovery of DNA structure

	Linus Pauling
	Watson
	Crick
	Wilkins

16 Single letter code for Selenocysteine is

	P
	B
	C
	U

17 Where will you keep collagen triple helix in ramchandran plot

	Top right
	Bottom right
	Bottom left
	Top left

18 t-RNA gene is synthesized by

	RNA polymerase I
	RNA polymerase II
	RNA polymerase III
	DNA polymerase III

19 Micro RNA was first discovered in

	Yeast
	Bacteria
	C. elegans
	Mouse

20 Micro RNA generally contain

	22 KB nucleotide
	22 thousand nucleotide
	22 nucleotide
	22 million nucleotide

Quiz No.2

Point added for a correct answer:
Points for an incorrect answer:
Ignore the questions' coefficients:

1 Animal cell doesn't contain

	mitochondria
	nucleus
	cell wall
	chromosome

2 Ocher codon is

	UAG
	UGA
	UAA
	UUU

3 The term CDKs stands for

	cyclin direct kinases
	cyclin depen kinases
	cyclin-dependent kinases
	cyclin-dull kinases

4 In cell cycle term "cdc" stands for

	cyclin direct cycle
	cell dependent cycle
	cell division cycle
	cell-dull cycle

5 DNA is a double helix (if true then explain if false then explain)

	TRUE.
	FALSE.

6 m-RNA is a single stranded structure (if true then explain if false then explain)

	TRUE.
	FALSE.

7 Translation of protein generally occurs in the nucleus, (if true then why and if false then why)

	TRUE.
	FALSE.

8 tRNA appears like cloverleaf structure ( if true then why and if false then why)

	TRUE.
	FALSE.

9 The first topoisomerase was discovered in

	Yeast
	Human
	E. coli
	Mouse

10 The first topoisomerase was discovered by

	James Watson
	James Xang
	James C. Wang
	Crick

11 Dideoxynucleotide Chain-termination methods was discovered by

	James Watson
	James Xang
	Frederick Sanger
	Crick

12 PCR methods typically amplify DNA fragments of up to

	10 bp
	100 bp
	10 kb
	10 mb

Note

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kaushlendra tripathi